Kellogg’s has a great family rewards system you can join for free. All you have to do is link your store cards to the website, and every time you buy a Kellogg’s product, you get points. You can then redeem those points for free stuff and great, high value coupons. Every once in a while, Kellogg’s will also release free codes you can use, so you don’t even have to buy any Kellogg’s products if you don’t want to.